[daip] [!12656]: AIPS - Offset source moving in RA during observation ADDNOTE

[Vivek Dhawan]

Vivek Dhawan updated #12656
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Offset source moving in RA during observation
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           Ticket ID: 12656
                 URL: https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/12656
                Name: Andy Biggs
       Email address: abiggs at eso.org
             Creator: User
          Department: AIPS Data Reduction
       Staff (Owner): -- Unassigned --
                Type: Issue
              Status: Response Overdue
            Priority: Default
                 SLA: NRAO E2E
      Template group: Default
             Created: 07 September 2018 04:11 PM
             Updated: 13 May 2020 06:45 PM
           Reply due: 21 May 2020 06:59 PM (1d 23h 52m)
      Resolution due: 13 February 2023 12:00 AM (999d 4h 53m)

maybe a differnce in the real troposphere vs. the model in the correlator? these are long tracks and elevation and azimuth are changing a lot. This is why DELZN was invented.  though my first guess, like yours, is the EOP.
The EOP correction is standard, it was done I assume? (replacing the EOP used at correlation with the true EOP post-facto, using CLCOR)

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